Defined in header

Usage

Defines an abstract type which cannot be instantiated, but can be used as a base class. Syntax pure

Specifies that a non-static member function

size_type size() const;

For an unqualified name, that is a name that does not appear to the right of a scope resolution operator ::, name lookup examines the

This header is part of the numeric library.

size_type size() const;

Defined in header

A FunctionObject type is the type of an object that can be used on the left of the function call operator.